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Time Taken For A Human Body To Fall 32000 Feet  
User currently offlineImonti From , joined Dec 1969, posts, RR:
Posted (9 years 11 months 1 week 6 days 14 hours ago) and read 6958 times:

Last night on National Geographic there was a program on UA 811 where the cargo door came open and a few people were sucked out. This one chap unfortunately died ont hat flight.

His parents set out on relentless persuit to discover what when wrong. As they said "unfortunately he didnt hit the engine and die instantly, he had to fall the full 4 minutes to the ground, I have no idea but 4 minutes is a long time, ok the human body does reach a terminal velocity, as they said it must be terrible, knowing that you might have been alive and realising you are plumiting to your death".

Does it really takes 4 minutes?

I dont know if the plane as at 32000 feet.

Well does any know the terminal velocity of a human, I cant really remember my science and te equations of motion.

Surely when he is plumiting to the ground, he will reach a terminal velocity and acceleration is 0 due to fricitonal force and he isnt getting, although what will the time be for him to reach that terminal velocity.

Also we assume that when he hits the water, is when time essentially stops for timing the fall.

38 replies: All unread, showing first 25:
 
User currently offlineL-188 From United States of America, joined Jul 1999, 29799 posts, RR: 58
Reply 1, posted (9 years 11 months 1 week 6 days 14 hours ago) and read 6940 times:

It wouldnt' have been the parents that pushed the issue, it would have been the lawyer they hired sueing Boeing, United, and everybody else they could to get damages out of them.

The longer somebody suffers the more emotional damage awards you can get.

Besides, he probably passed out on the way down. Skydivers that high wear masks for a reason.



OBAMA-WORST PRESIDENT EVER....Even SKOORB would be better.
User currently offlineImonti From , joined Dec 1969, posts, RR:
Reply 2, posted (9 years 11 months 1 week 6 days 14 hours ago) and read 6923 times:

They never sued united or boeing or ever asked for a cent.

They went to america and bought a car and drove around it countless times to find out what really happened and never asked for a cent back from any one.

they must have driven over 100000 miles easily.


User currently offlineFlyguyclt From United States of America, joined Aug 2005, 537 posts, RR: 8
Reply 3, posted (9 years 11 months 1 week 6 days 14 hours ago) and read 6923 times:

Hopefully, he would have passed out do to lack of oxygen and been spared anymore pain as he was going down. One could only hope at that point.

Safe Flying  Smile



Florida Express, Braniff II and ......
User currently offlineType-rated From United States of America, joined Sep 1999, 5031 posts, RR: 19
Reply 4, posted (9 years 11 months 1 week 6 days 14 hours ago) and read 6896 times:

On a documentary with his parents I saw, they said he got sucked into one of the engines as "parts" of him we found there. Has some new light been shed on this?


Fly North Central Airlines..The route of the Northliners!
User currently offlineAlitis From United States of America, joined Apr 2000, 259 posts, RR: 0
Reply 5, posted (9 years 11 months 1 week 6 days 14 hours ago) and read 6875 times:

FWIW, I vaguely remember from a statment from a physics class professor (a long time ago) that if anything was dropped from a very high altutude that had a mass over a cetain amount and not much wind resistance, terminal velocity would be around 150 mph. Someone asked if that is how fast skydivers fall before they pull the chute and he replied yes.

User currently offlinePlanespotterx From , joined Dec 1969, posts, RR:
Reply 6, posted (9 years 11 months 1 week 6 days 14 hours ago) and read 6845 times:

I guess it all depends on how he fell, if it was head-first then I guess thered be less resistance and more speed, where'as thered be more drag had he fallen flat-out like a parachuter.

User currently offlineBoeing nut From , joined Dec 1969, posts, RR:
Reply 7, posted (9 years 11 months 1 week 6 days 14 hours ago) and read 6845 times:

Also, the incident did not occur at 32,000'. If it had, no one would have survived. I don't recall the actual altitude, but it wasn't FL320.

User currently offlineImonti From , joined Dec 1969, posts, RR:
Reply 8, posted (9 years 11 months 1 week 6 days 13 hours ago) and read 6796 times:

Apparently the DNA tests done reveal it wasnt his body parts in the engine.

User currently offlineImonti From , joined Dec 1969, posts, RR:
Reply 9, posted (9 years 11 months 1 week 6 days 13 hours ago) and read 6783 times:

does FL320 mean flight level?

Well oxygen masks were deployed and some one did say to me, people did need them. dont quote me on the people need it.

As i said I didnt know the altitude, but I did hear how long it took him to fall. 32000 is "quite a common aircraft altitude"


User currently offlineCedarjet From United Kingdom, joined May 1999, 8114 posts, RR: 54
Reply 10, posted (9 years 11 months 1 week 6 days 13 hours ago) and read 6767 times:

Imonti, FL stands for Flight Level. It is measured in hundreds of feet, so 32,000 feet is Flight Level (FL) 320. 15,900 ft is FL159, 7,000 ft is FL070, etc.


fly Saha Air 707s daily from Tehran's downtown Mehrabad to Mashhad, Kish Island and Ahwaz
User currently offlineNavion From United States of America, joined May 1999, 1013 posts, RR: 1
Reply 11, posted (9 years 11 months 1 week 6 days 13 hours ago) and read 6738 times:

I thought the terminal velocity of the human body in a fall was about 126 miles per hour. I could be wrong but it does give an approximate idea of how long it would take a body to fall from any given altitude given the fact the acceleration to the terminal velocity would occur pretty quickly. Good question Imonti.

User currently offlineTrident2e From , joined Dec 1969, posts, RR:
Reply 12, posted (9 years 11 months 1 week 6 days 13 hours ago) and read 6723 times:

L-188, are you an idiot? Your first post here suggests you didn't even watch the programme. As Imonti says the parents didn't pursue compensation, they pursued the truth. And the truth was that Boeing tried to conceal evidence of a fault they knew about long before the United incident. The FAA was forced to change its findings as a result of the parents' investigation - something they shouldn't have had to do themselves.

User currently offlineSATL382G From , joined Dec 1969, posts, RR:
Reply 13, posted (9 years 11 months 1 week 6 days 13 hours ago) and read 6723 times:

Here's the NTSB synopsis:


http://www.ntsb.gov/ntsb/brief.asp?ev_id=20001213X27705&key=1

This happened between FL22 and FL23. Ejected pax were probably concious all the way down


User currently offlineL-188 From United States of America, joined Jul 1999, 29799 posts, RR: 58
Reply 14, posted (9 years 11 months 1 week 6 days 13 hours ago) and read 6710 times:

No I did not watch the program

All I said was that the longer the guy was concious during his fall the larger a pain and suffering damage claim would be in court.

Just like if an old person dies as opposed to somebody in their prime. The latter would have more value in a court of law as far as damages go.



OBAMA-WORST PRESIDENT EVER....Even SKOORB would be better.
User currently offlineImonti From , joined Dec 1969, posts, RR:
Reply 15, posted (9 years 11 months 1 week 6 days 12 hours ago) and read 6701 times:

What happened was 2 years before this event pan am had a problem as the latches on the cargo door were made of aluminium and they could bend easily.

Boeing sent out a note to airlines, and the FAA gave them 18 months to chnge the looking system, yet it was less than a year for this even to happen, then after it the FAA gave the airlines 30 days to change it.

The reason they were given so long as such a simple procudure (one would think) takes 10 hours to do, major down time for a plane and major expense.

An aviation lawyer was interviewd and as he said, for an airline, one plane ever 5-10 years 200 peeps, is less than the cost to down an entire series of aircraft, untill ur mom or brother/sister or kid is on it. Yet in my opinion that was more to play on peoples minds and hearts, yet he does have a point.

As Trident2e says, the faa/ntsb first came out with a report contrary to the parents findings, the parents pushed and forced for the recovery of the cargo door, it was eventually fetched from the bottom of the ocean and then the faa/ntsb changed their report. Amazing how 2 dedicated people can do that on their own with out the knowledge and expertise as the faa and ntsb and arrive at the correct answer the first time in a shorter space of time.

One thing, as I know a few people who have lost loved ones on airplane crashes, 6 people in fact. They never once asked for financial repayments (yes they are wealthy) yet as the one guys wife said, u know what, no matter how much money they give me, my husband and father to my kids wont come back, and what can the money they give me actually do?
Her husband died on the helderberg, that saa 742, which was through peoples mistakes.

Ok back to the question.

does any one knwo the altitude that it happened?

v=u+at
v2=u2+2as
s=ut+1/2at2

v=final velocity
u=initial velocity
a=acceleration
s=displacement
although he didnt fall straight down which might mean I would then need to know the energy.

m1u1 + m2u2 = m1v1 + m2v2

m=mass


that equation can help assuming some one can tell me his body weight or average males weight, assuming he was average on weight and build.


User currently offline777236ER From , joined Dec 1969, posts, RR:
Reply 16, posted (9 years 11 months 1 week 6 days 12 hours ago) and read 6684 times:

It would take someone about 18 seconds to reach terminal velocity, which is about 60 m/s for a falling person with arms outstretched, which means the person would fall about 540 metres.

Assuming he started at FL230 = 7010m, he'd have 7010 - 540 = 6470m falling at a constant speed of 60 m/s, which would take him 108 seconds. So in total it'd take about 126 seconds.


User currently offlineJamesag96 From United States of America, joined Nov 2001, 2095 posts, RR: 3
Reply 17, posted (9 years 11 months 1 week 6 days 12 hours ago) and read 6672 times:

Good lord...what a horrible thought. I would hope he passed out...


Why Kate, You're not wearing a bustle. How lewd.
User currently offlineJasepl From India, joined Jul 2004, 3582 posts, RR: 39
Reply 18, posted (9 years 11 months 1 week 6 days 8 hours ago) and read 6612 times:

Wouldn't it also depend a lot on the body in question? I would think Rosie O'Donnell would hit the ground long before Calista Flockhart...

User currently offline777236ER From , joined Dec 1969, posts, RR:
Reply 19, posted (9 years 11 months 1 week 6 days 8 hours ago) and read 6608 times:

She'd probably hit the ground after Calista Flockhart - she has much more surface area which means more drag which means a lower terminal velocity.

User currently offlineVaporlock From , joined Dec 1969, posts, RR:
Reply 20, posted (9 years 11 months 1 week 6 days 8 hours ago) and read 6606 times:

Nope I didn't watch the program......and I'm glad I didn't!

Jamesag96, I'm with you....what a horrible thought and for sure he would have passed out...Thank God!!!!

Phyllis  Wink/being sarcastic


User currently offlineJasepl From India, joined Jul 2004, 3582 posts, RR: 39
Reply 21, posted (9 years 11 months 1 week 6 days 7 hours ago) and read 6596 times:

She'd probably hit the ground after Calista Flockhart - she has much more surface area which means more drag which means a lower terminal velocity.

I would never, ever have thought of it that way 77236! Thanks. No wonder though, I kept failing physics in school...


User currently offlineAirxLiban From Lebanon, joined Oct 2003, 4512 posts, RR: 53
Reply 22, posted (9 years 11 months 1 week 6 days 7 hours ago) and read 6580 times:

23000 ft is 7000 m.

y(t)=y_0+v_0*t-1/2*g*t^2

0=7000+(0)-1/2*(-9.8)*(t^2)

t=37.8 seconds

however this of course is not accurate because the world is not a vacuum.



PARIS, FRANCE...THE BEIRUT OF EUROPE.
User currently offlineThecoz From , joined Dec 1969, posts, RR:
Reply 23, posted (9 years 11 months 1 week 6 days 7 hours ago) and read 6564 times:

Depending on your position, and altitude, terminal velocity is 120 mph+. If you were thrown into the thin atmosphere like that, wouldn't it be a lot like 'the bends'? I don't know much about the concept, but scuba divers experience it when they surface too quickly. I'd imagine this person would die almost instantly due to the force of air hitting him as well.

User currently offlineEspion007 From Denmark, joined Dec 2003, 1691 posts, RR: 0
Reply 24, posted (9 years 11 months 1 week 6 days 5 hours ago) and read 6526 times:

Depending on your position, and altitude, terminal velocity is 120 mph+. If you were thrown into the thin atmosphere like that, wouldn't it be a lot like 'the bends'? I don't know much about the concept, but scuba divers experience it when they surface too quickly. I'd imagine this person would die almost instantly due to the force of air hitting him as well.

I would assume that too. falling out of a plane at near supersonic speeds can easily rip you apart like paper.



Snakes on a Plane!
25 Jderden777 : the time of useful consciousness of a person at 32,000 feet would be very short...from 25,000 it is only a couple minutes usually and the useful....so
26 Tbar220 : Wow, this is an interesting physics problem. I assume you would just need to draw a free body diagram, you have the force of acceleration acting downw
27 Post contains images 777236ER : Wow, this is an interesting physics problem. I assume you would just need to draw a free body diagram, you have the force of acceleration acting downw
28 Flight152 : Imonti, FL stands for Flight Level. It is measured in hundreds of feet, so 32,000 feet is Flight Level (FL) 320. 15,900 ft is FL159, 7,000 ft is FL070
29 Jcxp15 : Being hypoxic can be a lot of fun!
30 Imonti : Thanks for the help every one and the equation 777236ER, as where some one pointed out about Rose and Calista, they will hit the water at the same tim
31 777236ER : Cedarjet is only partially correct. Flight levels start at 18,000 feet MSL (FL180), anything under that is just measured in thousands of feet. You're
32 L-188 : That and when I file a flight plan on Duats it is listed as FL regardless of altitude. Clear for FL020. Just one of the weird quirks of the system I g
33 Jderden777 : Flight levels are at 18,000 and up...they are called flight levels because the altimeter is set to 29.92" at & above FL180 as that is the start of Cla
34 777236ER : Flight levels are at 18,000 and up...they are called flight levels because the altimeter is set to 29.92" at & above FL180 as that is the start of Cla
35 N6376m : When I did my sky dive training we used about 2 miles a minute as a rough estimate of how fast you fell in free fall. That coincides with 120 mph term
36 Jaysit : Remember that he would not have fallen straight down - he would have been ejected out of the cabin in the opposite direction of the movement of the ai
37 777236ER : Remember that he would not have fallen straight down - he would have been ejected out of the cabin in the opposite direction of the movement of the ai
38 Airlinelover : Let's find out!! LHMark- time to take a dive.. wait.. it'd be a shame to waste all that beer.. nm Chris
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